Negative-retoucher.



No. 7|2,922. Patented Nov. 4, I902..

P. FRANKOIS. NEGATIVE RETOUCHER.

.(Applimfiion filed June 23. 1902.1

amut f. Firm/ 03:25,

with eaoeo THE m'mms PETERS co. wcrouma, wumue'rou, n c

UNITED STATES PATENT @FFICE.

PAUL FRANKOIS, OF NANTICOKE, PENNSYLVANIA.

NEGATlVE-RETOUCHER.

SPECIFICATION forming part of Letters Patent No. 712,922, dated November 4, 1902.

Application filed June 23, 1902, Serial No, 112,906. (No model.)

To all whom it may concern.-

Be it known that I, PAUL FRANKOIS, acitizen of the United States of America, residing at Nanticoke, in the county of Luzerne and State of Pennsylvania, have in vented certain new and useful Improvements in Negative- Retouchers; and I do declare the following to bea full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The invention relates to retouching devices for negative plates.

The object of the invention is to provide a device of this character whereby electrical means may be employed for reciprocating a retouching-pencil.

A further object is to produce such a device which shall be simple of construction, durable in use, and which will be capable of giving a maximum number of strokes of the retouching-pencil.

With the above and other objects in view, which will readily appear as the nature of the invention is better understood, said invention consists in certain novel features of construction and combination and arrangement of parts, which will be hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which- Figure l is a side elevation of the device, and Fig. 2 is a vertical longitudinal view of the same.

In the drawings, 1 denotes the lead point. 2 denotes the lead-holder, consisting of a small metal tube the inner end of which is reduced and squared.

3 denotes a bearing-sleeve through which the tube 2, carrying the lead, is adapted to pass.

5 denotes a spring coiled around the tube 2, and (5 denotes a collar fixed to the said tube and between which and'the inner end of the sleeve 3 the spring 5 is confined. The tension of the spring is to force the lead-holding tube inwardly.

7 denotes the casing, in the outer end of which is adapted to be fitted the bearingsleeve 3 and to be held therein by a screw -t or other suitable means. The outer end of the tube 2 may be provided with the usual clamping-fingers, over which is adapted to be screwed a ferrule having a taper or choked outer end for drawing the said clamping-fingers together to firmly hold the lead. This arrangement may be of the ordinary or anysuit' able construction and forms no part of this invention.

A collar or guide ring 10 is fixed in the casing 7 and is provided with a square aperture through which the squared and reduced inner end of the lead-holder is adapted to slide.

8 denotes a knocker having the form of a bell-crank lever and pivoted to the casing 7, one arm of which lever lies in the path of movement of the lead-carrying tube and the other arm in the path of movetnent of a hammer 1.6, fixed upon the end of a vibrating armature 17 of an electromagnet fixed in the casing 7. The conducting-wires of the magnet-coils and the vibrating armature run to binding-posts projecting from the rear of the casing 7, and to said posts are attached flexible conducting-cords running from a battery or suitable electrical supply. (Not shown.)

The parts are suitablyinsulated where necessary, and on the lower side and forward end the casing is provided with a suitable covering 18, of hard rubber or other material, to form a handle, and which may be made ornamental, if desired.

19 denotes a set-screw adapted to be screwed through the casing above the knocker S, the inner end of said screw being beveled or wedge shaped and adapted when screwed down to bear against the inner side of the upper arm of the knocker to limit and regulate the movement thereof. It will be obvious that when the distance between the knockerarm and the anvil end of the lead-holding tube is diminished or increased the force of the stroke from the vibrating hammer will also be diminished or increased, so that the lead will be caused to strike the plate lightly or heavily, as desired.

A coil-spring 20 surrounds the bolt 19 between its head and the casing, so that the bolt will be held in its adjusted position against accidental movement.

21 denotes a pin or lug fixed in the casing below the lower arm of the knocker to limit the downward movement of the same.

In the operation of the device it will be seen that when the magnet is energized the vibrating armature will cause the hammer to strike the knocker, and the knocker in turn will strike the anvil end of the lead-holding tube and force the same outwardly against the ten? sion of the spring 5, causing the lead point to strike the plate with a rapid reciprocating stroke.

From the foregoing description, taken in connection with the accompanying drawings, it is thought that the construction, mode of operation, and advantages of my improved retouching device will be readily apparent without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention. 7

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a photographic retoucher, the combination of a casing, a spring-retracted leadholding tube adapted to be reciprocated within said casing, an electron'lagnet adapted-to be carried by said casing, an armature adapted to be vibrated when said magnet is energized, a hammer fixed on the end of said vibrating armature, and a pivoted knocker adapted to transmit the strokes of said hammer to the inner end of said spring-retracted lead-holding tube, substantially as set forth.

2. In a photographic retoucher, the combination of a casing, a spring-retracted 1eadholding tube adapted to be reciprocated with- I gized, a hammer fixed on the end of said vibrating armature, and a pivoted knocker adapted to transmit the strokes of said hammer to the inner end of said spring-retracted lead-holding tube, and means for regulating the force of the strokes from said hammer upon thesaid lead-holdingtube, substantially as described. I I

3. In a photographic retoucher, the combination of a casing, a spring-retracted leadholding tube adapted to be reciprocated within said casing, an electromagnet adapted to be carried by said casing, an armature adapt ed to be vibrated when said magnet is energized, a hammer fixed on the end of said vibrating armature, and a pivoted knocker adapted to transmit the strokes of said hammer to the inner end of said spring-retracted lead-holding tube, a set-screw adapted to be screwed through said casing in the path of movement of said knocker to regulate the stroke of said knocker, and means for lockin g said set-screw in an adjusted position, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

PAUL FRANKOIS. Witnesses:

F. W. MADAJEWSKI, S. L. FEDDER. 

